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Finding the Fourth Proportional to 394,212.38, 544,013.15 and 215,364.38

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Solution

The fourth proportional to 394,212.38, 544,013.15 and 215,364.38 is: 297,202.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,212.38 : 544,013.15 = 215,364.38 : x
  2. Step 2: Convert to fraction form
    394,212.38/544,013.15 = 215,364.38/x
  3. Step 3: Cross multiply
    394,212.38x = 544,013.15 × 215,364.38
  4. Step 4: Simplify right side
    394,212.38x = 117,161,050,964.71
  5. Step 5: Solve for x
    x = 117,161,050,964.71/394,212.38
  6. Step 6: Final answer
    x = 297,202.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.